<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>HTML5 新标签应用</title>
    <style>
      * {
        box-sizing: border-box;
      }

      ul {
        padding: 0;
        list-style: none;
      }

      body {
        font-family: Arial, Helvetica, sans-serif;
        color: #333;
        line-height: 1.4;
      }

      #header {
        margin-bottom: 15px;
        background: #333;
        color: #fff;
        padding: 10px;
      }

      #main {
        float: left;
        width: 69%;
      }

      #sidebar {
        float: right;
        width: 29%;
      }

      .clr {
        clear: both;
      }

      #footer {
        background: #333;
        color: #fff;
        padding: 10px;
      }

      .text-center {
        display: block;
        text-align: center;
      }

      .card {
        border: 1px solid #ddd;
        background: #f4f4f4;
        padding: 20px;
        margin-bottom: 10px;
      }
    </style>
  </head>
  <body>
    <!-- 头部 -->
    <header id="header" class="card">
      <h1>米斯特吴</h1>
      <p>专注于前端开发框架的课程设计</p>
    </header>

    <main id="main">
      <!-- 欢迎模块 -->
      <section id="welcome" class="card">
        <h2>欢迎大家学习米斯特吴的课程</h2>
        <p>
          Lorem ipsum dolor sit amet consectetur adipisicing elit. Fugiat
          cupiditate itaque possimus numquam corporis odit deserunt voluptas
          repellat ad ex earum magnam mollitia magni eaque nisi, excepturi nam
          temporibus! Sed. <br />
          <a href="#" class="text-center">了解更多</a>
        </p>
      </section>
      <!-- 博客模块 -->
      <section id="blog">
        <h2>米斯特吴博客</h2>

        <article class="article">
          <h3>第一篇</h3>
          <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Autem
            veniam adipisci necessitatibus quia quisquam? Eligendi vitae quia
            totam accusantium officiis!
          </p>
        </article>
        <article class="article">
          <h3>第二篇</h3>
          <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Autem
            veniam adipisci necessitatibus quia quisquam? Eligendi vitae quia
            totam accusantium officiis!
          </p>
        </article>
      </section>
    </main>

    <!-- 右边栏 -->
    <aside id="sidebar" class="card">
      <h3>导航</h3>
      <nav>
        <ul id="main-nav">
          <li><a href="index.html">主页</a></li>
          <li><a href="about.html">关于</a></li>
          <li><a href="contact.html">联系我们</a></li>
        </ul>
      </nav>
      <hr />
      <h3>联系我们</h3>
      <ul>
        <li><strong>地址:</strong> 北京市昌平区</li>
        <li><strong>QQ:</strong> 27732357</li>
        <li><strong>微信:</strong> 27732357</li>
      </ul>
    </aside>

    <div class="clr"></div>

    <!-- 底部 -->
    <footer id="footer">
      <p class="text-center">Copyright &copy; 米斯特吴 2020</p>
    </footer>
  </body>
</html>
